20x25x1 Air Filters
A 20x25 label and 20x24 label share the 20-inch side, but differ by 1 inch on the other side; compare both measurements before ordering.
20x25x1 air filters are a standard size found in wall returns and larger ceiling returns. The extra length compared to a 20x20 gives a larger face and more surface for air to pass through.
20x25 filter prices and depths
20x25x1 MERV 8 from $35.50 per 3-pack. Compare all three depths below. These are one-time purchase prices before tax and out-of-state shipping. *Per-filter amounts are rounded; the pack total is the price charged. Packs of 6 and 12 are priced in the calculator.
20x25x1: 3-pack prices
Nominal: 20 x 25 x 1 in. Plusco standard actual: 19.5 x 24.5 x 0.5 in.
| Filter | 3-pack total | Per filter* |
|---|---|---|
| MERV 8 | $35.50 | $11.83 |
| MERV 13 | $45.75 | $15.25 |
| Carbon | $44.25 | $14.75 |
20x25x2: 3-pack prices
Nominal: 20 x 25 x 2 in. Plusco standard actual: 19.5 x 24.5 x 1.5 in.
| Filter | 3-pack total | Per filter* |
|---|---|---|
| MERV 8 | $49.50 | $16.50 |
| MERV 13 | $68.25 | $22.75 |
| Carbon | $65.75 | $21.92 |
20x25x4: 3-pack prices
Nominal: 20 x 25 x 4 in. Plusco standard actual: 19.5 x 24.5 x 3.5 in.
| Filter | 3-pack total | Per filter* |
|---|---|---|
| MERV 8 | $74.50 | $24.83 |
| MERV 13 | $102.50 | $34.17 |
| Carbon | $99.25 | $33.08 |
Check the filter slot before changing depth. A 2-inch or 4-inch filter is not a substitute for a 1-inch filter unless your equipment accepts it.
Price 20x25x1 filters in the calculator Need another size? Request a quote
20x25x1 filter specifications
| Nominal size | 20 x 25 x 1 inches |
|---|---|
| Actual size | 19.5 x 24.5 x 0.5 inches (½ inch under nominal) |
| Depth | 1 inch (2 and 4 inch available in the calculator) |
| Ratings | MERV 8 and MERV 13, plus carbon in the calculator |
| Made | Custom manufactured in South Florida |
Nominal size is the rounded size printed on the filter frame. Our standard filters run ½ inch under nominal in each dimension so they slide into the slot, and custom sizes are cut to your exact measurements. Always match the nominal size printed on your current filter.
Where a 20x25x1 filter fits
You will find 20x25x1 filters in wall returns and larger ceiling returns in mid-size homes, and in light commercial spaces like small offices and clinics. The larger face area helps airflow, which is useful when the system needs a broader filter surface.
Choosing MERV 8 or MERV 13 in 20x25x1
If you run the AC most of the year, a bigger filter face is useful for keeping airflow steady between changes. Pick MERV 8 for dust, pollen and pet dander. Pick MERV 13 for finer particles, and confirm your equipment supports it. Setting a reorder schedule is the easiest way to avoid a clogged filter in summer.
- MERV 8 air filters: everyday filtration for dust, pollen and pet dander.
- MERV 13 air filters: finer particle capture for cleaner indoor air.
Not sure which fits your system? Read the MERV 8 vs MERV 13 guide or call (561) 241-9666.
Order 20x25x1 filters
Use the filter calculator to pick 20x25x1, choose your MERV rating and see your price right away. Orders start at 3 filters, with free shipping in Florida. Compare pack prices in the calculator, and we handle custom sizes and bulk orders.
20x25x1 air filter questions
Is 20x25x1 the same as 25x20x1?
They are the same filter turned a different way. We list it as 20x25x1. If your old filter says 25x20x1, order 20x25x1.
What is the actual size of a 20x25x1 filter?
Nominal 20x25x1 filters measure 19.5 x 24.5 x 0.5 inches (½ inch under nominal). Custom sizes are cut to your exact measurements. Always match the nominal size printed on your current filter.
How often should a 20x25x1 filter be changed?
Many homes change a 1-inch filter every one to three months. Pets, construction dust and year-round cooling mean sooner. Ordering on a schedule keeps it simple.
Other sizes
Don’t see your size? We make custom-size filters for homes, offices, hotels and facilities.
More 20x25 sizes and fit help
Compare 20x25x2 filters and 20x25x4 filters, check the nominal vs actual size chart, or visit filter resources and our MERV 13 compatibility guide.